DORDT COLLEGE ENGINEERING DEPARTMENT
ELECTRONICS I — EGR 322
(FALL 2016)

PROBLEM SETS

(Last update: 12/09/2016 1:13 pm)
PS
#  
Assigned Due Returned Problems Assigned
(In Sedra & Smith unless otherwise noted)
13

11/30 12/07 12/09   Topic: Discrete Amplifier Design
  Read: 7.5
 
  Do +7.118, +7.120, +D7.126, +7.134
  Note clarification of Problem 7.20.
  Optional: Wikipedia, Coaxial cable
12

11/09 11/16 12/08   Topic: Amp Configurations, Biasing
  Read: 7.3, 7.4
 
  Do +7.59, +7.68, +7.78, D7.83, +D7.92, D7.105
11

11/02 11/09 12/08   Topic: Basics of amplification, small sig models
  Read: 7.1, 7.2
 
  Do 7.5, +7.6, +7.25, +*7.33, 7.42, +7.53, *7.58
10

10/26 11/02 11/17   Topic: BJT DC circuits, secondary effects
  Read: 6.3, 6.4
 
  Do +6.58, +6.61, +**6.63, D6.64, +*6.68, **6.69
9

10/21 10/26 11/17   Topic: BJT Device Structure, Models
  Read: 6.1, 6.2
 
  Do
  6.1, +6.2, +6.8, 6.9, +6.10, +6.12, +6.28, 6.29
8

10/12 10/19 11/17
  Topic: MOSFET operating modes, I-V characterstcs,
            equations for iD(vGS), depletion mode, p-ch
  Read: 5.2, 5.3, 5.4
 
  Do +5.17, 5.18, 5.24, +5.31, D5.44, D5.49, +5.65
7

10/05 10/12 11/17
  Topic: MOSFET, Device Structure, models
  Read: 5.1
 
  Do 4.97 parts c, d, e only, +5.1, D5.5, +5.13
 
  Optional: Appendix A: VLSI Fab Technology
6

9/28 10/05 10/10
  Topics: More on rectifiers, limiters, clampers
  Review Chapter 4 as needed.
 
  Study for a test on Friday, 9/30
 
  Do 4.4 parts i, j, k only, 4.47 (see note below),
  *4.80.
 
  Note: Add this question to 4.47 near the end
  the problem statement and just before the
  parenthetic note:
If each diode has zero
  resistance associated with wire bonds and one
  of the 10 diodes is at a temperature of 303 K
  whereas all the other diodes are at 293 K, how
  does the net current divide through the 10
  parallel diodes?
  Hint: All 10 diodes have the same vD. Find that
  voltage iteratively. (your choice of technique)
  Then find each diode's current.
 
  Note:
  Is = (4.6)T/10)Iso where
        ΔT = Change in temp from given (degrees kelvin)
        Iso = Saturation current at a given temp (deg K).
  VT = kT/q, see text page 186.
  Boltzmann's constant, k = 1.380 648 5279 x 10-23 J/K

  Elementary charge, q = 1.602 176 620 898 x 10-19 C
5

9/21 9/28 10/10
  Topics: Diodes—Rectifiers, limiters,
              clampers, voltage multipliers
  Read 4.5, 4.6, 4.7
 
  Do +4.48, 4.49, *4.51, D4.60, 4.70, +4.71,
  +4.77, 4.78, *4.97 parts (a) and (b) only.
  Computer assistance, e.g. Mathcad etc., is
  recommended for problems involving rectifiers.
 
  Optional reading in the Wikipedia:
  Voltage multiplier and related V doubler
  Zener diode and related Avalanche diode
  Light-emitting diode
  Solar cell and related photodiode
  Varicap (a.k.a. Varactor)
  Selenium rectifier.
 
  Note: Test #1 on Friday, 9/30.
4

9/14 9/21 9/28
  Topics: Diodes—Ideal, models of real diodes
  under forward and reverse bias. Rev. breakdown.
  Read 4.1, 4.2, 4.3, 4.4
 
  Do *2.77, +4.2, +4.3, 4.4 parts a, b, f only,
  Mathcad or Matlab etc. are recommended for
  making plots for 4.4; +4.9, 4.18, 4.22 parts a,
  b, c, e only; *4.54.
 
  Note errata on problem 4.22
3

9/07 9/14 9/19
  Toppics: Op-amp configurations (inverting, sum,
  etc.), DC imperfections, slew rate, FB Bandwidth.
  Read Chapter 2 Sections 2.3 through 2.8
 
  Do +*2.43, +D2.51, 2.62, +2.73, *2.77, 2.85,
  2.92, 2.126, D*2.127
 
  Note clarification of problem *2.77
  Note errata in Equation 2.9
2

8/31 9/07 9/09
  Topics: Amplifier input resistance, output re-
  sistance, gain, dB, frequency content of signals,
  non-ideal operational amplifiers.
  Read Chapter 1, Chapter 2 through Section 2.2
 
  Do +1.25, +1.32, 1.33, 1.39, D*1.50, 1.65, 1.67
  1.72, +2.7, +2.19, +D2.34.
  Note clarification of problem +1.25
  Note errata on +D2.34
  Also see the clarification of +D2.34 part (b).
1

8/24 8/31 9/02

See
notes
6 and 9
below
  Topics: Review of Circuit Analysis.
  Review as necessary from your EGR 220
  textbook and/or the "Introduction to Electrical
  Engineering" handout on Canvas@Dordt here9,
  and/or see Sedra & Smith Appendix D. Also
  available on Canvas, Appendix D9.
 
  Do Problems 1.5, 1.6, +D*1.9, D1.13, 1.14, *1.18,
  +1.20, 1.23. (See notes 1 through 5 below.)
  Bring homework questions to class on Friday.

Note 1) Discussion in class is an important part of working the assignments. Students must be prepared to discuss the assignments starting with the class following the "Assigned" date.

Note 2) The text includes "Exercises" embedded throughout the reading assignments and "Problems" at the end of each chapter. All the assignments refer to "Problems" at the end of the chapter unless they are prefixed with "Ex". Example: The first problem assigned in this class, 1.5, is found on page 42. (Ex1.5 is found on page 11, and Ex1.5 is not the assigned problem).

Note 3) A "+" mark in front of the problem number means an answer is given at the end of the text, in Appendix L.

Note 4) The letter "D" in front of a problem number indicates a design oriented problem. The student may need to use some judgement in understanding what the problem statement is requesting. (Ask Prof. De Boer if you are in doubt.)

Note 5) Asterisks (*) indicate more difficult or more time-consuming problems (in the authors' judgement). The more asterisks, the more difficult.

Note 6) If the "Returned" date is a link, then the solution key is posted on Canvas@Dordt. Click on the returned date to go directly to the solution key.

Note 7) Problem sets shown above with no "Assigned" date are tentative. More problems might be added, expected due dates might change, but problems shown will eventually be assigned.

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